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A238283 Number of (n+1) X (3+1) 0..3 arrays with no element greater than all horizontal neighbors or less than all vertical neighbors.

%I A238283 #6 Jun 14 2025 19:48:19
%S A238283 50,1844,42084,737366,12926271,245920800,4810332239,92790334588,
%T A238283 1767175335274,33631393265283,642245437813719,12282485000914102,
%U A238283 234784249649799771,4485361687341554225,85682498512887615932
%N A238283 Number of (n+1) X (3+1) 0..3 arrays with no element greater than all horizontal neighbors or less than all vertical neighbors.
%C A238283 Column 3 of A238287.
%H A238283 R. H. Hardin, <a href="/A238283/b238283.txt">Table of n, a(n) for n = 1..210</a>
%e A238283 Some solutions for n=3
%e A238283 ..1..2..2..2....2..3..3..1....0..1..1..0....0..1..2..2....3..3..3..3
%e A238283 ..0..1..2..2....1..2..2..0....0..1..1..0....0..1..2..2....1..1..1..1
%e A238283 ..0..1..2..2....0..2..2..0....1..3..3..0....3..3..2..2....1..1..1..0
%e A238283 ..1..1..3..3....0..3..3..1....1..3..3..0....3..3..2..2....1..1..1..0
%Y A238283 Cf. A238287.
%K A238283 nonn
%O A238283 1,1
%A A238283 _R. H. Hardin_, Feb 22 2014